Replace FINAL and OVERRIDE with their C++11 counterparts in Source/core/[css|rendering|clipboard]

Source/core/rendering/RenderDetailsMarker.h

Index: Source/core/rendering/RenderDetailsMarker.h
diff --git a/Source/core/rendering/RenderDetailsMarker.h b/Source/core/rendering/RenderDetailsMarker.h
index 4c1cbb245950c727efac7eab80dca3bd81d45c77..32b79ddd32a1abce6967fdda8a3a346740cd278e 100644
--- a/Source/core/rendering/RenderDetailsMarker.h
+++ b/Source/core/rendering/RenderDetailsMarker.h
@@ -25,7 +25,7 @@
 
 namespace blink {
 
-class RenderDetailsMarker FINAL : public RenderBlockFlow {
+class RenderDetailsMarker final : public RenderBlockFlow {
 public:
     RenderDetailsMarker(Element*);
 
@@ -34,9 +34,9 @@ public:
     Orientation orientation() const;
 
 private:
-    virtual const char* renderName() const OVERRIDE { return "RenderDetailsMarker"; }
-    virtual bool isDetailsMarker() const OVERRIDE { return true; }
-    virtual void paint(PaintInfo&, const LayoutPoint&) OVERRIDE;
+    virtual const char* renderName() const override { return "RenderDetailsMarker"; }
+    virtual bool isDetailsMarker() const override { return true; }
+    virtual void paint(PaintInfo&, const LayoutPoint&) override;
 
     bool isOpen() const;
 };